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(...) My initial thought was "Why?", but of course the next couple of posts displayed the creative energy of this group and contained several good answers to my question. For range finding using the laser wouldn't monitoring the intensity of the (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) Wasn't this what the SUN Jini demo did? Joel Shafer joel@connect.net (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Open NELUG Meeting Saturday 10/23 @ 7:00 PM.
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The New England Lego Users' Group (NELUG) will be hosting an open meeting on Saturday, October 23rd at 7:00 PM, during the upcoming MindFest event. The MindFest organizers at the MIT Media Lab have graciously offered us a large room for the (...) (26 years ago, 8-Oct-99, to lugnet.announce, lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) Pulsing the laser would be implemented with the "motor speed control". (...) How about just using it with mirror(s) and the light sensor as a tripwire? (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | RE: !!! Laser attachments for Mindstorms !!!
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(...) difficult (...) of a (...) Snip You put a single field lens in front on the laser to provide a conical beam, but this is usually already done by the manufacturer because a laser diode is basically a point source and needs to be collimated to (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | !!! Laser attachments for Mindstorms !!!
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Lasers are very well, and make cool toys. My cat loves to chase the little red spot on the carpet! But if you're talking about scanning or diffusing the beam, aren't you defeating the purpose of using a laser. If you want a cone, use a super- bright (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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Maybe the robot could use the laser to draw spiro-graph designs on the wall, I'm not sure if the motors could position the beam that fast though. Joel Shafer joel@connect.net (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) Rangefinding can be done without much of this hassle. I developed an application a few years ago to "showcase" a product for the optoelectric company for which I worked. The product was a "position sensitive diode", aka a photodiode with two (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) I don't think I was clear enough in my last post. The $35 price includes shipping, but only for orders inside the US. International orders need to pay shipping. Josh (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | GP2D12 and Handyboard
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Hi all! I recently got hold of a sharp GP2D12 ir range sensor (The analog version, not 8-bit serial) Upon connecting it to my handyboard (Vcc-5v, Gnd-Gnd, and Vo to analog port) I get between 249 and about 251 value from the analog port. Clearly no (...) (26 years ago, 8-Oct-99, to lugnet.robotics.handyboard)
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| | Motors
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Does anyone know where to get good motors that work good with the handyboard. I need geared DC motors because we dont want our project to be a racing car. If anyone has any answers or suggestions please email me back. Thanks. TIM ===== (26 years ago, 8-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Motors
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Try Micro Mo, they have high quality motors and gearheads. They can be pricy if (...) (26 years ago, 9-Oct-99, to lugnet.robotics.handyboard)
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| | wireless camera
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I remember sometime ago a discussion on wireless cameras. I just saw this one that can be battery operated. and is 900mhz. from the picture you really can't tell the size of the camera but I thought I'd pass it along. (URL) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: wireless camera
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(...) It says Camera Dimensions: 2" x 3.75" x 5.5" and that's probably not including the battery box or antenna. (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) I was actually working on something like this using one of those cheap little $8 laser pointers. The idea is to use a pair of mirrors that can be rotated to specific angular locations to build an X-Y Laser Plotter. One mirror rotates (...) (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | Re: Motors
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no doubt Micro Mo motors are sweet, but if the project is on a hobby budget, also consider: All Electronics -An electronics surplus company with a decent selection of motors and lots of other neat gadgets for robot building. This will be among the (...) (26 years ago, 9-Oct-99, to lugnet.robotics.handyboard)
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| | RE: !!! Laser attachments for Mindstorms !!!
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(...) SNIP (...) SNIP Big rocks, too. :>) The problem is not so much the laser, as it is your scanning. Unless you are projecting against a phorescent screen, there is no "residual" trace, regardless of power. It is the speed at which the eye can't (...) (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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One of the early things I did with my laser pen was rubberband one of the 5 stud long "helicopter rotor" plates to the side of it. I never got it balanced *perfectly*, but it was close. I then stuck the axle from the older 9 volt technic motor (...) (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | RF transceiver
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Hi , I am a handyboard user and I am trying to build a tele-robot. I am using the transmitter and receiver from Glolab. I have fix up a pair of transceiver namely "A" and "B" (with TM1V and RM1V) as guided in "How Encoders and Decoders work" using (...) (26 years ago, 9-Oct-99, to lugnet.robotics.handyboard)
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| | Re: !!! Laser attachments for Mindstorms !!!
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Okay. The adress for that OpteK Technology is www.optekinc.com . They have other sensors too, for magnetic and infared needs. Intresting place to go for position sensors. The products have possibilities. Andy (26 years ago, 9-Oct-99, to lugnet.robotics)
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